Hands-Free Mobile Phone

1. A hands-free mobile phone comprising: a housing defined two outer slide channels and two inner slide channels inside the corresponding outer slide channels, each of the outer slide channels comprising an access hole, a pivot hole, and a coupling passage communicating the access hole with the pivot hole; and a hands-free unit forming with two pivot portions, each of the pivot portions comprising a pivot shaft pivotably engaged in the pivot hole of one of the outer slide channels, and a plugging end formed on the pivot shaft and pivotably inserted in the corresponding inner slide channel; wherein the plugging ends of the pivot portions are respectively inserted in the inner slide channels through the corresponding access holes of the outer slide channels, the pivot shafts thereof are respectively placed in the corresponding access holes and slid into the pivot holes of the outer slide channels through the corresponding coupling passages thereof, thereby the hands-free unit being secured to the housing.

2. The hands-free mobile phone as described in claim 1 , wherein a plurality of dents is defined in the hands-free unit around each of the pivot portions thereof, and a plurality of projections protrudes from the housing around the pivot hole of each of the outer slide channels thereof and movably received in the corresponding dents of the hands-free unit.

3. The hands-free mobile phone as described in claim 1 , wherein a plurality of dents is defined in the housing around the pivot hole of each of the outer slide channels thereof, and a plurality of projections protrudes from the hands-free unit around each of the pivot portions thereof and movably received in the corresponding dents of the housing.

4. The hands-free mobile phone as described in claim 1 , wherein a width of the coupling passage of each of the outer slide channels is smaller than diameters of the access hole and the pivot hole of the corresponding outer slide channel.

5. The hands-free mobile phone as described in claim 4 , wherein the diameter of the access hole of each of the outer slide channels is larger than the diameter of the pivot hole of the corresponding outer slide channel.

6. The hands-free mobile phone as described in claim 5 , wherein each of the outer slide channels has a generally dumbbell-shaped profile.

7. The hands-free mobile phone as described in claim 1 , wherein a recessed portion is formed in the housing for receiving the hands-free unit therein.

8. The hands-free mobile phone as described in claim 7 , wherein the recessed portion of the housing extends from a top of an upper section thereof toward two lateral sides of the upper section.

9. A hands-free mobile phone comprising: a housing; a hands-free unit; at least one outer slide channel being defined in one of the housing and the hands-free unit, an inner slide channel being defined inside said at least one outer slide channel, said at least one outer slide channel comprising an access hole, a pivot hole, and a coupling passage communicating the access hole with the pivot hole; and at least one pivot portion formed on the other of the housing and the hands-free unit, said at least one pivot portion comprising a pivot shaft and a plugging end formed on the pivot shaft, the plugging end of said at least one pivot portion being inserted in the inner slide channel through the access hole of said at least one outer slide channel and the pivot shaft thereof being placed in the corresponding access hole and slid into the pivot hole of said at least outer slide channel through the corresponding coupling passage, thereby the hands-free unit being pivotably secured to the housing via said at least one pivot portion being pivotably engaged in said at least one outer slide channel and said at least one inner slide channel.

10. The hands-free mobile phone as described in claim 9 , wherein a plurality of dents is defined around said at least one pivot portion, and a plurality of projections is formed around the pivot hole of said at least one outer slide channel and movably received in the corresponding dents.

11. The hands-free mobile phone as described in claim 9 , wherein a plurality of dents is defined around the pivot hole of said at least one outer slide channel, and a plurality of projections is formed around said at least one pivot portion and movably received in the corresponding dents.

12. The hands-free mobile phone as described in claim 9 , wherein said at least one outer slide channel has a generally dumbbell-shaped profile.

13. The hands-free mobile phone as described in claim 12 , wherein a width of the coupling passage of said at least one outer slide channel is smaller than diameters of the access hole and the pivot hole thereof.

14. The hands-free mobile phone as described in claim 13 , wherein the diameter of the access hole of said at least one outer slide channel is larger than the diameter of the pivot hole thereof.